Spout hub



FIG. 1 is a perspective view of the spout hub of our new design, with a spout shown in broken lines to illustrate the environment; the portion shown in broken lines forming no part of the claimed design;

FIG. 2 is a side elevation view of the spout hub;

FIG. 3 is a top plan view of the spout hub; and,

FIG. 4 is a bottom plan view of the spout hub. 

The ornamental design for a spout hub, as shown and described. 